puma — Vulnerabilities & Security Advisories 12

Puma is a popular open-source web server and application server primarily used for Ruby applications, particularly Rails. Historically, it has faced vulnerabilities across multiple classes including remote code execution, cross-site scripting, and privilege escalation. Security characteristics often involve its multi-threaded architecture and Rack interface compatibility. While no major public incidents have been widely documented, its 12 recorded CVEs highlight potential risks in areas like request handling and configuration management. The project maintains regular security updates, but administrators should prioritize patching due to its common deployment in production environments handling sensitive web traffic.